public class HomeWorkDemo02 {
    public static void main(String[] args) {
        FootBallPlayer footBallPlayer = new FootBallPlayer();
        footBallPlayer.setAge(30);
        footBallPlayer.setName("梅西");
        footBallPlayer.sport();
    }
}


class Player {
    private String name;
    private int age;

    public Player() {
    }

    public Player(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public void sport() {
        System.out.println("运动员要运动");
    }

}

class FootBallPlayer extends Player {

    @Override
    public void sport() {
        System.out.println("踢足球");
    }
}

class BasketBallPlayer extends Player {
    @Override
    public void sport() {
        System.out.println("打篮球");
    }
}